Cooling system



Nov. 10 1925. 7 1,560,694 I L. c. JOSEPHS, JR.. ET AL COOLING SYSTEM il d July 7, 1922 2 Sheets-Sheet 1 EH! mm m WITNESS Nov. 10,1925- .L. C- JOSEPHS, JR., ET AL I cd LING SYSTEM Filed July '7, 1922 2 sheets-Sheet 2 &

WITNESS Patented Nov. 10, 1925.

UNITED STATES PATENT OFFICE.

LYMAN C. JOSEPHS, JR, AND LEVEBETT CUTTEN, OF ALLENTOWN, PENNSYL- VANIA, ASSIGNORS TO INTERNATIONAL .MOTOR COMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF DELAWARE.

coomne SYSTEM.

Application filed July 7, 1922. Serial No. 573,339.

T all whom it may concern Be it known that we, LYMAN C. JOSEPHS, J r., and LEVERETT H. OU'rrEN, a citizen of the United States, and a subject of the King of Great Britain, respectively, both residing in Allentown, in the State of Pennsylvania, have invented certain new and useful Improvements in Cooling Systems, of which the following is a specification, reference being had to the accompanying drawings,

forming a part hereof.

This invention relates to a cooling system for motor vehicles and has for its general object to bring. into effective relationship elements which themselves are old for the most part and have been recognized as efficient but which'intheir nature have not been susceptible of combination into an efficient unitary structure. More particularly,

the invention seeks to provide in a cooling s stem for the use of a multi-bladed fan on t e flywheel of the motor to be cooled, a fan scroll in association therewith and radiator sections above the fan and at the sides of the radiator structure which receive a uniform distribution of cooling currents thereover and lend themselves to ready cleaning. A multi-bladed fan has long been recognized as an eflicient unit but it has not lent itself to convenient us in a radiator structure since no practical, means have been devised for bringing about distribution of the air over the radiator tubes or for insuring operation of the fan in its maximum capacity. In accordance withlthe present invention a fan scroll has been brought into co-operative relation to such a fan in a radiator structure for the purpose of securing the greatest volume and velocity of air and means have been provided for dispersing the air which is projected from this housing uniformly over the cooling sections at opposite sides of the radiator structure. By the im rovements herein indicated it becomes possi le also, in one embodiment, to employ straight finned radiator tubes and to associate therewith unitary caps at the top of the tube sections which may be removed to expose the upper ,ends thereof and facilitate cleaning.

The invention will be described more particularly with reference to the embodiment illustrated inthe accompanying drawings wherein:

Figure 1 is aflrear view partly in elevation and partly in section ofa radiator structure embodying the improvements,

Figure 2 is a view partly inelevation and partly in vertical section of the cooling system illustrated in Figure 1:"-

Figure 3 is a view in 'plan parts being broken away in the interest of clearness. v

The improved radiator structure may be mounted on the side frame members a of a motor vehicle and include an upper reservoir 6 lower tank sections a, d connected by a pipe (2 and in the preferred'embodiment, as illustrated, vertically disposed straight finned radiator tubes f arranged in sections at opposite sides of the radiator structure and extending between the upper reservoir 7 b and the respective" lower tanks 0, (I. As shown most clearly in Figure 3 the upper reservoir 6 is provided adjacent its ends with removable caps b which overlie the upper ends of the tubes f. When the caps 72 are removed, as by loosening their retaining bolts 6 the straight finned radiator tubes f have their upper ends exposed so that cleaning is greatly facilitated. In addition to the parts of the radiator described there is included in the improved cooling system, in co-operative relation therewith, a multi-bladed centrifugal fan-g which may be bolted on the flywheel h of the motor to be cooled. The axis of the flywheel indicated at h is, of course, considerably below the radiator structure and it is a. problem to employ a fan of multi-bladed type on the flywheel for the purpose of cooling the tubes f in the radiator sections. However, such a type offan is extremely efficient provided it can be properly employeda In accordance with the present invention there is provided for the fan a fan scroll"?! formed, for convenience, as a generally semi-cylindrical casting which may be bolted to the underpart of the flywheel housing as by means of bolts 11'. This housing'conforms generally to the lines of the spiral channel in the fan scroll i. For instance, as shown in Figure 1 one side of thehousing k for the flywheel is curved to conform to the periphery of the Since the tren fan and there is comparatively small clearance between the fan and this curved portion 7a., By the construction and arrangement of parts described and considering the fan to be rotating in a counterclockwise direction as viewed in Figure 1 it is evident that the surrounding air entering into the housing principally through the open rear face la thereof will be picked up by the fan and crowded by the blades thereof into the spiral channel along the fan scroll. The maximum volume of air may be crowded by the blades into the housing the eccentricity thereof with respect to the fan permitting maximum capacity. The air currents discharged upwardly by the fan at the right side thereof as viewed in F igure 1 are confined between the front and real-walls k of the radiator structure. Having secured, as described, a maximum volume of air circulating with a maximum velocity and created with the maximum eflieiency, which is to say, with a minimum wastage of power, it becomes a further this character to isperse or direct the air currents uniformly over the tubes f in the radiator sections which, as pointed out above, are disposed at opposite sides of the upper reservo1rb. The tendency of these 30.

currents as will be understood from Figure 1 is to take a path generally towards the tubes at the left of the structure. The proper dispersion and direction are secured in the improved construction by means of baflles which are so disposed as to separate the air and deflect it in equal volume towards the two sections of the tubes. xAt the upper part of the sace between the front and rear walls 10 o the radiator structure there is disposed a generally V shaped baflle which presents diverging plates 1, Z. These plates may be secured to the front and rear walls and may intersect along such a line I as will insure pro er distribution of the air;

of the air currents is towards the'left as viewed in .Figure 1 the plate Z will extend beyond the center line m which passes through the radiator and the axis hof the flywheel [use as to intercept a greater proportion of such currents as they pass upwardly'and tangentially from the an blades. In this way, a sufiicient volume of air is deflected by the bafile Z towards the tubes in the right-hand section. However, it is.true that some of the air currents will pass from the fan along substantially vertical paths. Such currents impinging upon the horizontal. wall of the reservoir b ten to retard movement towards the tubes in they right-hand section and for this reason a curved baflle n is mounted between the front and rear walls'k and in such relation to the fan and to thebaflie Z as to intercept and deflect all air currents which would not be intercepted and deflected by the baflie Z. The

roblem in a structure of.

form of bafllen is such as to deflect the air by reason of the association therewith of a I fan scroll which-insures the creation of air currents-of maximum volume and velocity. The interposition of appropriate baflles between the fan housing and the radiator tubes effects a dispersion and direction thereof in anefiicient manner and in equal volumes uniformly over all of the tubes grouped in the two sections at opposite sides of the reservoir b.

While the invention has been described with reference to the employment of straight finned radiator tubes, it has been found that the elements function to equal advantage where the radiator sections are of a cellularv 'ty e core, or a finless tube core.-

hat we claim is:

1. In a cooling system for motor vehicles in combination with a tank, radiator sections disposed vertically and connected with said tank adjacent opposlte ends thereof,

a multi-bladed fan mounted on the flywheel 1 and disposed generally below and between the two sections, and means to deflect the air from the fan in substantially equal volumes over said two sections.

2. In a cooling system for motor vehicles in combination with water reservoirs, sections of tubes extending therebetween, a multi-bladed fan mounted on the flywheel and disposed generally below and between the sections of tubes, a fan scroll for the fan and directing the air currents generally upward, frontand rear walls extending between the sections of tubes to confine said air, and bafiles disposed between said walls to deflect the air in equal volume over the two sections of tubes.

3. In a cooling system for motor vehicles in combination with atank, radiator sections dis osed vertically and connected with said tan in spaced relation, a multi-bladed fan d disposed generally below and between said' sections, and means to deflect the air from the fan over ,Sflld sections in substantially equal volume.

This sppcification signed this 5th day of July, A. 1922.

LYMAN o. JOSEPHS, JR.

LEVERETT H. CUTTEN. 

